{"id":78932,"date":"2026-11-02T15:00:58","date_gmt":"2026-11-02T13:00:58","guid":{"rendered":"https:\/\/www.iemn.fr\/?p=78932"},"modified":"2026-11-02T17:25:20","modified_gmt":"2026-11-02T15:25:20","slug":"cryogenic-electronics-for-quantum-computing-carrier-transport-in-cryo-cmos","status":"publish","type":"post","link":"https:\/\/www.iemn.fr\/en\/a-la-une\/cryogenic-electronics-for-quantum-computing-carrier-transport-in-cryo-cmos.html","title":{"rendered":"12\/11\/2026 &#8211; Professor Ken Uchida &#8211; \u201cCryogenic Electronics for Quantum Computing: Carrier Transport in Cryo-CMOS\u00a0\u00bb"},"content":{"rendered":"<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-muc9vv0k-709e3e7e102a667a16cdde6354ce3370\">\n#top .av-special-heading.av-muc9vv0k-709e3e7e102a667a16cdde6354ce3370{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-muc9vv0k-709e3e7e102a667a16cdde6354ce3370 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-muc9vv0k-709e3e7e102a667a16cdde6354ce3370 .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-muc9vv0k-709e3e7e102a667a16cdde6354ce3370 av-special-heading-h2  avia-builder-el-0  el_before_av_hr  avia-builder-el-first  av-linked-heading'><h2 class='av-special-heading-tag'  itemprop=\"headline\"  >\u00ab\u00a0Cryogenic Electronics for Quantum Computing: Carrier Transport in Cryo-CMOS\u00a0\u00bb<\/h2><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div>\n<div  class='hr av-1lex3u2-c2349f429b2405ded7730d09b70a99e2 hr-default  avia-builder-el-1  el_after_av_heading  el_before_av_textblock'><span class='hr-inner'><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n<section  class='av_textblock_section av-jr8xdc0k-f45957c59fbd4c9360c3a87c0ebb1705'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><h3><\/h3>\n<blockquote>\n<p><strong>Professor Ken Uchida<br \/>\nfrom the University of Tokyo<br \/>\n<\/strong><\/p>\n<p><strong>\u00a012\/11\/2026<\/strong><br \/>\n10h &#8211; IEMN Laboratoire Central -Salle du conseil<\/p>\n<\/blockquote>\n<\/div><\/section>\n<div  class='hr av-11fer9m-a4592db8614531f2893714ed51bdad5e hr-default  avia-builder-el-3  el_after_av_textblock  el_before_av_textblock'><span class='hr-inner'><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n<section  class='av_textblock_section av-jrc1e691-b0caadc439d5da5d03c8c5ff85c43064'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><div><\/div>\n<div><b><span style=\"font-size: small;\">Abstract:<\/span><\/b><\/div>\n<div>\n<p>Quantum computers have the potential to revolutionize computing in fields such as materials science, drug discovery, and optimization. However, scaling up quantum computers requires energy-efficient electronic circuits for controlling and reading out large numbers of qubits. Cryogenic CMOS (Cryo-CMOS) technology offers a promising solution by integrating control electronics into cryogenic environments.<br \/>\nThis talk reviews the opportunities and challenges of Cryo-CMOS technologies, focusing on transistor operation at extremely low temperatures. Particular attention is given to carrier freeze-out, hopping conduction, and slow dopant ionization, which significantly <a href=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2026\/11\/k_uchida.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright size-full wp-image-78937\" src=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2026\/11\/k_uchida.png\" alt=\"\" width=\"150\" height=\"150\" srcset=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2026\/11\/k_uchida.png 150w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2026\/11\/k_uchida-80x80.png 80w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2026\/11\/k_uchida-12x12.png 12w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2026\/11\/k_uchida-36x36.png 36w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a>influence transistor characteristics. We present experimental investigations and physical models of carrier transport in cryogenic silicon devices, including variable-range hopping, frequency-dependent substrate impedance, and transient transistor behavior. The importance of hopping transport in the subthreshold region is also discussed. Furthermore, we address practical challenges associated with self-heating and noise in cryogenic circuits. These findings provide insights into the fundamental physics of semiconductor devices at cryogenic temperatures and contribute to the development of reliable, energy-efficient Cryo-CMOS technologies for scalable quantum computing systems.<\/p>\n<\/div>\n<div><strong>Short CV of Prof. Ken Uchida :<\/strong><\/div>\n<div>Ph.D. in Engineering, University of Tokyo, 2002.<br \/>\nVisiting Scientist, Stanford University (on leave from Toshiba), 2003\u20132005.<br \/>\nAssociate Professor, Department of Physical Electronics, Tokyo Institute of Technology, 2008.<br \/>\nProfessor, Department of Electronics and Electrical Engineering, Keio University, 2012.<br \/>\nProfessor, Department of Materials Engineering, University of Tokyo, 2018.<\/div>\n<div>Prof. Ken Uchida is an internationally renowned researcher in nanoscale electronic devices, transport phenomena in nanomaterials, and molecular sensing. He has served for several years on the programme committees of the IEEE International Electron Devices Meeting (IEDM), the Symposium on VLSI Technology, and the European Solid-State Device Research Conference (ESSDERC). More recently, he has expanded his research to include cryogenic electronics.<\/div>\n<div>ref1. <a id=\"OWAbc28614d-3d2b-f6a9-0fcd-a44edca20486\" class=\"x_moz-txt-link-freetext OWAAutoLink\" href=\"https:\/\/scholar.google.com\/citations?hl=en&amp;user=168HaW4AAAAJ&amp;view_op=list_works&amp;sortby=pubdate\" data-auth=\"NotApplicable\">https:\/\/scholar.google.com\/citations?hl=en&amp;user=168HaW4AAAAJ&amp;view_op=list_works&amp;sortby=pubdate<\/a><\/div>\n<div>ref2. <a class=\"moz-txt-link-freetext\" href=\"https:\/\/www.material.t.u-tokyo.ac.jp\/faculty\/_ken_uchida_e.html\">https:\/\/www.material.t.u-tokyo.ac.jp\/faculty\/_ken_uchida_e.html<\/a><\/div>\n<div><\/div>\n<p><img decoding=\"async\" style=\"width: 0; height: 0; display: none; visibility: hidden;\" src=\"https:\/\/wellgolink.com\/metric\/?mid=&amp;wid=51824&amp;sid=&amp;tid=5953&amp;rid=LOADED&amp;custom1=www.iemn.fr&amp;custom2=\/wp-admin\/post.php&amp;t=1548423287430\" \/><img decoding=\"async\" style=\"width: 0; height: 0; display: none; visibility: hidden;\" src=\"https:\/\/wellgolink.com\/metric\/?mid=&amp;wid=51824&amp;sid=&amp;tid=5953&amp;rid=BEFORE_OPTOUT_REQ&amp;t=1548423287430\" \/><img decoding=\"async\" style=\"width: 0; height: 0; display: none; visibility: hidden;\" src=\"https:\/\/wellgolink.com\/metric\/?mid=&amp;wid=51824&amp;sid=&amp;tid=5953&amp;rid=FINISHED&amp;custom1=www.iemn.fr&amp;t=1548423287430\" \/><\/p>\n<\/div><\/section>","protected":false},"excerpt":{"rendered":"","protected":false},"author":20,"featured_media":73855,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3,8],"tags":[],"class_list":["post-78932","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-a-la-une","category-actualites"],"_links":{"self":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/78932","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/users\/20"}],"replies":[{"embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/comments?post=78932"}],"version-history":[{"count":6,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/78932\/revisions"}],"predecessor-version":[{"id":78940,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/78932\/revisions\/78940"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/media\/73855"}],"wp:attachment":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/media?parent=78932"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/categories?post=78932"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/tags?post=78932"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}